JPH06329382A - Escalator device - Google Patents

Abstract

PURPOSE:To prevent a wrench by connecting a bracket to a nut, which is installed on a sprocket shaft of a driving force transmitting mechanism to carry out changing operation between a normal condition and a wheelchair condition and can move in the width direction by rotation of this shaft, by an installing screw through a spherical seat, and installing a wheelchair footstep swinging restricting rod on this. CONSTITUTION:At an alighting port in wheelchair operation, in a movable footstep 10a of a wheelchair footstep, a sprocket shaft 23 rotates by a mesh of a chain with a sprocket of a driving force transmitting mechanism, and rotates a sprocket shaft 21. Thereby, nuts 13 and 13 move, and insert a rod 17 in a hole 19, and house the movable footstep 10a in a main body 10, and returns to a normal condition. At this time, even when the center of the rod 17 and the center of the hole 19 are dislocated from each other, a spherical seat 16 is installed in a bracket 14 on which the rod 17 is installed, and since an installing surface of the bracket 14 and the nut 13 forms a sperical surface, the rod 17 rotates with the spherical seat 16 as its center, and absorbs positional dislocation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an escalator device equipped with a wheelchair step which transforms from a normal form during normal operation into a wheelchair form capable of mounting a wheelchair.

[0002]

2. Description of the Related Art A conventional escalator device provided with steps for a wheelchair is used for a single wheelchair or a plurality of wheelchairs disposed between a plurality of steps of an escalator, as disclosed in Japanese Patent Laid-Open No. 4-153196. A step and a driving force transmission that transforms the wheelchair step from a normal shape to a wheelchair-mountable wheelchair shape and from a wheelchair shape to a normal shape based on the rotation of the sprocket shaft that is arranged inside the wheelchair step when driving the wheelchair. And a mechanism for rotating the sprocket shaft by engaging a power transmission member with a sprocket of a sprocket shaft of a wheelchair step that is arranged at a portion corresponding to an entrance / exit of the main frame. Was there.

[0003]

The conventional escalator device is constructed as described above, and the rotation of the sprocket shaft arranged inside the wheelchair step is restrained in order to restrain the swing of the wheelchair step in the normal state. The rod that is attached to the nut that is movable in the width direction through the bracket penetrates the holes of the movable part and the fixed part, and in the wheelchair form, the rod is pulled out from the hole, but the rod retreats from the hole. In this case, it was impossible to prevent the wheelchair steps from being twisted due to the displacement of the holes in the movable part and the fixed part.

SUMMARY OF THE INVENTION An object of the present invention is to provide an escalator device which can prevent prying by smoothly withdrawing a rod from a hole.

[0005]

[Means for Solving the Problem] A plurality of normal steps arranged in a main frame of an escalator and circulating, special steps interposed between the plurality of normal steps, and special steps arranged inside the special steps. When driving, the wheelchair steps are changed from a normal form to a wheelchair form capable of mounting a wheelchair based on the rotation of the sprocket shaft, and a driving force transmission mechanism that transforms the wheelchair form from the normal form to a normal form, and the sprocket shaft rotates to move in the width direction. A mechanism that restrains the swing of the wheelchair steps in the normal form by allowing a rod attached to a possible nut via a bracket to pass through the holes of the movable part and the fixed part, and also pulls out the rod from the hole in the form of a wheelchair. And the power transmission body is meshed with the sprocket of the sprocket shaft of the wheelchair steps which is located inside the main frame and corresponds to the entrance / exit of the wheelchair, And a mounting screw for connecting the bracket and a nut fixed to the rod for moving the rod, a nut for moving the bracket, and a mounting screw for connecting the bracket and the nut. The screw is characterized in that a spherical seat having a convex hemispherical surface on the side in contact with the bracket is interposed between the bracket and the nut.

[0006]

According to the present invention, in order to restrain the swing of the wheelchair steps in the normal state, the bracket is attached to the nut that is movable in the width direction by the rotation of the sprocket shaft disposed inside the wheelchair steps. The rod attached through the hole penetrates through the holes of the movable part and the fixed part, and when the wheelchair is in the form, the rod is pulled out from the hole, fixed to the rod, and the bracket for moving the rod and the bracket for moving the bracket. A nut and a mounting screw that connects this bracket to the nut are provided, and this mounting screw has a spherical seat with a convex hemispherical surface on the side that contacts the bracket between the bracket and the nut. Since the insertion angle can be changed, even if the holes in the movable part of the wheelchair step and the fixed part are misaligned, the rod can be smoothly exited from the hole without prying. Can.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in FIGS. In the figure, 1 is a balustrade installed upright on both sides of the escalator main frame, and an endless moving handrail 2 that circulates is wound around the balustrade 1 by a driving machine. 3 is a plurality of normal steps arranged inside the escalator main frame,
Normally, the shaft of the front wheel of the step 3 conveys the person or the load carried by the circular movement based on the drive of the endless chain drive. Reference numeral 4 denotes a group of wheelchair steps arranged between a plurality of normal steps 3 and used during normal operation of the escalator.
Circular movement in the same normal form as in Figure 1
As shown in FIG. 5, the wheelchair user 6 has a function of transforming into a wheelchair form in which the wheelchair user 6a of the wheelchair user 6 assisted by the helper 5 can be mounted.

In this embodiment, the wheelchair step group 4 has the first and second steps.
Although it is composed of the second and third steps 7, 8 and 9 for wheelchairs, the present invention is not limited to this. The second wheelchair step 8 has a movable step 10a that forms the same horizontal plane as the tread surface of the first wheelchair step 7 when the wheelchair is operated, a main body 10, and a erection member horizontally attached to the main body 10. 11, a plurality of support portions 12 attached to both lower sides of the erection member 11, a left and right movable nut 13 disposed inside the plurality of support portions 12, and a left and right direction like the nut 13. A movable rod 17
A bracket 14 fixed to the rod 17 for moving the rod 17, and a nut 1 for moving the bracket 14.
3 and a mounting screw 15 for connecting the bracket 14 and the nut 13 to each other.
4 and nut 13 and bracket 14
A spherical seat 16 having a convex hemispherical surface on the side in contact with, a pin 17 horizontally attached to the upper part of the bracket and penetrating both side walls of the support 12, and a stopper for restricting the lateral movement of the nut 13. 18 and the movable step 10a mounted on both sides of the movable step 1
It is composed of a hole 19 for restraining the shaking motion of 0a.

Reference numeral 20 denotes a driving force transmission mechanism disposed inside each of the first, second and third steps 7, 8 and 9 for wheelchairs. The driving force transmission mechanism 20 operates when the wheelchair is driven. It has the function of transforming the first, second, and third wheelchair steps 7, 8, 9 from the normal form to the wheelchair form, or from the wheelchair form to the normal form.

The structure of the driving force transmission mechanism 20 will be described below in detail by taking the second wheelchair step 8 as an example.
A rotatable sprocket shaft horizontally mounted between Nos. 3 and 13, and both ends of the sprocket shaft 21 mounted to the nuts 13 and 13 are engraved with a screw for power transmission as shown in FIG. Reference numeral 22 is a rotatable sprocket attached to the sprocket shaft 21. Reference numeral 23 denotes a rotatable sprocket shaft located adjacent to the front of the sprocket shaft 21. Screws for power transmission are engraved on both ends of the sprocket shaft 23 mounted on the nuts 13, 13.
Reference numeral 24 is a sprocket that is attached to the sprocket shaft 23 and is rotatable. A gear 25A that meshes with the gear 24 is mounted on the sprocket shaft 23 substantially at the center thereof, as shown in FIGS. The driving force transmission mechanism 20 arranged inside the first and third wheelchair steps 7 and 9 is basically configured in the same manner.

Next, the operation will be described. For convenience of explanation, the case of the ascending operation will be described.

First, in the case of normal operation, the wheelchair step group 4 circulates and moves in the same normal manner as the normal step 3 to convey an ordinary user from the lower floor entrance to the upper floor exit. To do.

Next, the case of wheelchair driving will be described.

First, when the wheelchair user 6 who has come to the lower floor entrance operates the wheelchair operation changeover switch, the wheelchair step group 4 is driven to move horizontally at a low speed below the entrance / exit floor of the entrance. The sprocket 22 of the force transmission mechanism 20 sequentially meshes with the chain 26 attached to the escalator body to operate the driving force transmission mechanism 20. At this time, the transformation operation of the second wheelchair steps 8 will be described as an example. The horizontally moving sprocket 22 meshes with the chain 26 attached to the escalator body to rotate, and the sprocket shaft 21 rotates. The sprocket shaft 23 is rotated, the nuts 13 and 13 move, the rod 17 is pulled out from the hole 19, the movable step 10a is pulled out from the main body 10, and the inclined portion forms the same horizontal plane as the tread surface of the first wheelchair step 7. To do.

Next, when the wheelchair step group 4 horizontally moves at a low speed below the entrance / exit floor of the exit, the sprocket 24 of the driving force transmission mechanism 20 sequentially meshes with the chain 26 attached to the escalator body. Drive force transmission mechanism 2
0 is operated. At this time, taking the transformation operation of the second wheelchair steps 8 as an example, the horizontally moving sprocket 24 is attached to the chain 26 attached to the escalator body.
And the sprocket shaft 23 rotates,
The sprocket shaft 21 is rotated, the nuts 13 and 13 move, the rod 17 is inserted into the hole 19, and the movable step 10a is housed in the main body 10 to return to the normal form.

The movement of the rod 17 will be described in detail in the above description. FIG. 5 shows the position of the rod 17 during wheelchair driving, and FIG. 6 shows the position of the rod 17 during normal driving.

First, during wheelchair operation, when the wheelchair step group 4 moves horizontally at a low speed below the entrance / exit floor, the movable step 10a of the second wheelchair step 8 is stored in the main body 10. At that time, the rod 17 tries to penetrate through the holes 19 mounted on both sides of the movable step 10a, but it is assumed that the center of the rod 17 and the center of the hole 19 may deviate as shown in FIG. If the rod 17 is inserted into the hole 19 in the state of FIG. 5, the nut 13, the bracket 14, the rod 17, the hole 19 and the like may be damaged. However, the bracket 14 to which the rod 17 is attached has a spherical seat 1
6 is attached and the mounting surfaces of the bracket 14 and the nut 13 are spherical, so that the rod 17 can rotate within a range centered on the spherical seat 16, and as shown in FIG. Even when the center of the rod is displaced, the rod 17 can be inserted into the hole 19 while being tilted as shown in FIG. 6, and the rod 17 can be inserted without applying an excessive force to the nut 13 or the like. The same effect can be obtained when the rod 17 is pulled out.

According to this embodiment, the second wheelchair step 8
The rod 17 inserted into the hole 19 for restraining the swinging movement of the movable step 10a of FIG. When the rod 17 exits, the device installed in the wheelchair step can be prevented from being damaged without exerting an excessive force.

[0019]

According to the present invention, the second wheelchair step 8 is provided.
By allowing the rod 17 to be inserted into the hole 19 to restrain the swinging movement of the movable step 10a in a certain range, an unreasonable force is applied to the device installed in the wheelchair step when the rod 17 exits. It is possible to provide an escalator device that can prevent the device from being damaged.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an escalator device of the present invention.

FIG. 2 is an explanatory view showing a second wheelchair step according to the present invention.

FIG. 3 is a plan view showing a meshing start state between a sprocket of the driving force transmission mechanism of the present invention and a chain at the exit opening attached to the escalator body.

FIG. 4 is a plan view showing a meshing start state between a sprocket of the driving force transmission mechanism of the present invention and a doorway chain attached to the escalator body.

FIG. 5 is an explanatory view showing a second wheelchair step when driving a wheelchair according to the present invention.

FIG. 6 is an explanatory view showing a second wheelchair step according to the present invention during normal driving.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Fixed part of 2nd wheelchair step, 10a ... Movable part of 2nd wheelchair step, 11 ... Erection member, 12 ... Multiple support parts, 13 ... Nut, 14 ... Bracket, 15 ... Mounting screw, 16 ... spherical seat, 17 ... rod, 18 ... stopper, 19 ... hole, 21 ... sprocket shaft, 22 ... sprocket, 25A ... gear.

Claims (1)

[Claims] 1. A plurality of normal steps arranged in a main frame of an escalator and circulating, special steps interposed between the plurality of normal steps, and a sprocket shaft arranged inside the special steps during special operation. Based on the rotation of the wheelchair, the wheelchair steps are changed from a normal shape to a wheelchair-mountable shape, and a driving force transmission mechanism for transforming the wheelchair shape from a normal shape into a normal shape, and a nut movable in the width direction by rotation of the sprocket shaft. A mechanism for restraining the swing of the wheelchair steps in the normal form by penetrating the rod attached through the bracket through the holes of the movable part and the fixed part, and withdrawing the rod from the hole in the wheelchair form, A power transmission member is provided on the sprocket of the sprocket shaft of the wheelchair steps that is arranged in the portion corresponding to the entrance / exit of the main frame and has moved during wheelchair operation. An escalator device comprising an engaging device for rotating the sprocket shaft, a bracket fixed to the rod for moving the rod, a nut for moving the bracket, and a mounting for connecting the bracket and the nut. An escalator device, wherein a screw is provided, and a spherical seat having a convex hemispherical surface on a side in contact with the bracket is interposed between the bracket and the nut in the mounting screw.